Remember to floss behind back teeth or where there is no adjacent tooth.

记得刮后牙就是那些没有毗邻的牙齿。这样你才算做到位了。

youdao

Remember to floss behind back teeth or where there is no adjacent tooth.

记得刮后牙就是那些没有毗邻的牙齿。这样你才算做到位了。

youdao